I haven't fixed the LUMIs with the pads at the back.
I was afraid to create some dirt stains at the wall.
So I left the protection at the sticks at the back an fixed them with a strap at the bottom and the left side at the stairs. ( I took a photo)
(These straps are called "power strips" made by TESA here in DE)
The original strips at the back are very common strips and the can be removed if there is need with some dissolver as turpentine, alcohol. etc.
After done this you can place new ones of course.
Never use acetone, this is affecting the plastic as well!!!!
What I never would do:
Fix the LUMIs with screws and wall plugs. (A hole is a hole!!! )